ancient roomba?

[randomjitter.livejournal.com]

Atlantis is  a really clean place, isn't it?  Has anyone wondered what keeps it clean all the time?  Surely the ancients didn't perform janitor duty inbetween their brilliant scientific discoveries and screw-ups ...

So any story that deals/mentions the housekeeping facility/devices　(roomba/scooba anyone?) would be greatly appreciated.

TIA